This is a list of the different LinuxFocus logos 

LF-tag-small.gif -- old icon small
LF-tag.gif -- old icon
Topicon.gif -- old icon with white background
border-short.jpg -- brown big icon, multilingual magazin 
lfdolphin.transparent.xcf -- the dolphin from LF
lflogo.gif -- new logo transparent
lflogo.xcf -- gimp file
lflogo_button.gif -- new logo as button
lflogo_button.jpg -- new logo as button, jpg does not look nice
lflogo_button.xcf -- gimp file
lflogo_sbutton.gif -- new logo as small button
lflogo_sbutton.jpg -- jpg file
lflogo_sbutton.xcf -- gimp file
lflogo_button_exact.gif -- like lflogo_button but sting fits exactly
lflogo_button_exact.xcf -- gimp file